
The United Nations (UN) was founded in 1945 on three pillars: international peace and security, human rights, and development. Since its inception, the UN has been actively involved in developing and upholding international law, which is a key goal outlined in the UN Charter. The UN's principal judicial organ is the International Court of Justice, which addresses international disputes and helps prevent their escalation. The UN Security Council also plays a crucial role in international law by approving peacekeeping missions, imposing sanctions, and authorizing the use of force when necessary. The UN promotes the rule of law within member states, fostering the development of norms, social practices, and institutions that ensure the independence of core governance institutions. The rule of law is essential for sustaining peace, protecting human rights, and promoting economic and social development.
| Characteristics | Values |
|---|---|
| UN's principal judicial organ | International Court of Justice |
| UN's role | To uphold international law |
| UN Charter | An international treaty |
| UN's work | Development and respect for international law |
| UN's work implementation | Courts, tribunals, multilateral treaties, and the Security Council |
| Security Council's powers | Approving peacekeeping missions, imposing sanctions, authorizing the use of force |
| UN's role in promoting the rule of law | Fostering the development of norms, social practices, and institutions |
| Rule of law's role | Providing a right of access to public services |
| Rule of law's impact | Creating opportunities and equity |
| Rule of law's impact on the UN | Helping the UN with its broader responsibilities |
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What You'll Learn

The UN Charter and international law
The United Nations was founded in 1945 on three pillars: international peace and security, human rights, and development. The UN Charter, considered an international treaty, is a key document that codifies the major principles of international relations. It outlines the rules and structure of the organization, and its primary objective is to maintain international peace and security.
The UN Charter also forms the basis for the development and respect for international law, which has been a key part of the UN's work since its inception. The third preambular paragraph of the UN Charter states:
> "to establish conditions under which justice and respect for the obligations arising from treaties and other sources of international law can be maintained."
The UN's principal judicial organ is the International Court of Justice (ICJ), and its statute is an integral part of the UN Charter. The ICJ has 18 judges, elected by the states for a term of nine years, and no two judges can be from the same country. The Court addresses international disputes involving economic rights, rights of passage, the non-use of force, non-interference in the internal affairs of states, diplomatic relations, hostage-taking, the right of asylum, and nationality.
The Security Council, another important organ of the UN, also has international law implications through its actions related to peacekeeping missions, ad hoc tribunals, sanctions, and resolutions. The Council can refer certain situations to the Prosecutor of the International Criminal Court (ICC) if international crimes, such as genocide, crimes against humanity, or war crimes, have been committed.
The UN Charter empowers the General Assembly to initiate studies and make recommendations to promote the development and codification of international law. The Assembly also makes recommendations to states on international issues, including political, economic, humanitarian, social, and legal matters.
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The role of the International Court of Justice
The International Court of Justice (ICJ) is the principal judicial organ of the United Nations. It was established in 1945 by the San Francisco Conference, which also created the UN. The ICJ has 15 to 18 judges, elected by the General Assembly and the Security Council for terms of nine years. No two judges can be from the same country.
The ICJ's role is to bring a peaceful settlement to international disputes or situations that might lead to a breach of the peace. The Court decides disputes in accordance with international law, including international conventions, treaties, and customs, as well as the general principles of law recognized by civilized nations. The Court's jurisdiction to try contentious cases depends on the consent of states, as international justice is still optional. The ICJ's judgments have addressed international disputes involving economic rights, rights of passage, the non-use of force, non-interference in the internal affairs of states, diplomatic relations, hostage-taking, the right of asylum, and nationality.
The ICJ has helped to prevent the escalation of disputes by achieving peaceful settlements on issues such as land frontiers, maritime boundaries, and territorial sovereignty. The Court also has the power to give advisory opinions at the request of the General Assembly of the United Nations, the Security Council, or other authorized bodies.
The development of, and respect for, international law has been a key part of the work of the United Nations since its founding. The UN Charter, which is considered an international treaty, codifies the major principles of international relations, including the sovereign equality of states and the prohibition of the use of force in international relations. The UN has also been actively mainstreaming human rights and gender equality in its activities, identifying where rights and obligations are held so that they can be respected and reinforced.
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The UN's promotion of the rule of law
The United Nations was founded in 1945 on three pillars: international peace and security, human rights, and development. The UN Charter, considered an international treaty, codifies the major principles of international relations, from the sovereign equality of states to the prohibition of the use of force in international relations. All member states are expected to be subject to the laws outlined in the UN Charter and to apply them in their international relations.
The principal judicial organ of the UN is the International Court of Justice (ICJ). The ICJ has 18 judges, elected by the states for a term limited to nine years, with no two judges from the same country. The Court has addressed international disputes involving economic rights, rights of passage, the non-use of force, non-interference in the internal affairs of states, diplomatic relations, hostage-taking, the right of asylum, and nationality.
The UN's work in upholding international law is carried out in many ways—by courts, tribunals, multilateral treaties, and the Security Council, which can approve peacekeeping missions, impose sanctions, or authorize the use of force when there is a threat to international peace and security. The Security Council can refer certain situations to the Prosecutor of the International Criminal Court (ICC) if it appears that international crimes (such as genocide, crimes against humanity, war crimes, and the crime of aggression) have been committed. The ICC is legally and functionally independent of the UN and is governed by a Negotiated Relationship Agreement.
The UN promotes the rule of law within member states by fostering the development of norms, social practices, and institutions that ensure the independence of core governance institutions. The rule of law is fundamental to international peace and security, political stability, and achieving economic and social progress and development. It is also foundational to people's access to public services, curbing corruption, restraining the abuse of power, and establishing a social contract between people and the state.
The UN's New Vision reiterates its commitment to the rule of law as a principle of governance and acknowledges the interrelatedness of the rule of law with all human rights. The 2012 Declaration of the High-Level Meeting of the General Assembly on the Rule of Law at the National and International Levels is a key document in this regard.
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The UN's three pillars
The United Nations (UN) was founded after the Second World War by 51 countries with the primary objective of preventing future wars and maintaining international peace and security. The UN's three pillars, as established by the UN Charter, are:
Peace and Security
The UN Security Council has primary responsibility for international peace and security. The UN works to prevent conflict, help conflicting parties make peace, and create conditions that allow peace to hold. This includes supporting national rule of law institutions to prevent and de-escalate conflicts, and creating an environment conducive to peace and security. The UN also deploys peacekeepers to protect civilians and maintain peace.
Human Rights
The UN promotes human rights by fostering the development of norms, social practices, and institutions that ensure the independence of core governance institutions. It has helped shape a system of international law and standards that protect and promote rights, including ending racial discrimination, banning torture and genocide, protecting the rights of children, refugees, and minorities, and regulating the arms trade. The UN also reviews how member states are fulfilling their human rights obligations through the 'Universal Periodic Review' process.
Development
The UN promotes development through the rule of law by strengthening the voices of individuals and communities, providing access to justice, ensuring due process, and establishing remedies for rights violations. It also works to protect human rights, including economic, social, and cultural rights, to support inclusive and sustainable development. The UN's work in development is closely linked to its other pillars, as former Secretary-General Kofi Annan stated:
> "We will not enjoy security without development, [nor] enjoy development without security, and we will not enjoy either without respect for human rights."
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The UN's cooperation with the ICC
The United Nations' work in upholding international law and promoting the rule of law is central to its mission of maintaining international peace and security. The UN's cooperation with the International Criminal Court (ICC) is a crucial aspect of this work.
The ICC is an independent judicial institution established to prosecute individuals who commit the most serious international crimes, such as genocide, war crimes, crimes against humanity, and aggression. The ICC's jurisdiction is based on the Rome Statute, which outlines the rights of victims, the obligations of states, and the procedures for referring cases to the Court.
Additionally, the UN and the ICC cooperate in various areas, including information exchange and logistical support. The ICC also works closely with non-governmental organizations (NGOs) such as Human Rights Watch and Amnesty International, as well as smaller, local organizations focused on peace and justice missions.
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Frequently asked questions
The UN plays a crucial role in developing and upholding international law and justice. The UN Charter, which is considered an international treaty, sets out the major principles of international relations, including the sovereign equality of states and the prohibition of the use of force. The UN promotes the rule of law, which is a principle of governance where all persons, institutions, and entities are accountable to the same laws, without discrimination.
The UN does not have the power to enforce laws directly. Instead, it works through its principal judicial organ, the International Court of Justice (ICJ), and other international courts and tribunals. These bodies address international disputes and help prevent their escalation by providing impartial solutions based on international law.
The UN promotes the rule of law within member states by encouraging the development of norms, social practices, and independent institutions that ensure good governance. This includes fostering gender equality, human rights, and access to public services, as well as curbing corruption and restraining the abuse of power.
The UN Security Council can refer situations involving international crimes, such as genocide, crimes against humanity, and war crimes, to the International Criminal Court (ICC). The ICC is independent of the UN but cooperates with it through a Negotiated Relationship Agreement.








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